Optical fiber handpiece



FIG. 1 is perspective view of the optical fiber handpiece;

FIG. 2 is a side view thereof;

FIG. 3 is a rear view thereof; and,

FIG. 4 is a front view thereof.

The broken lines are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for an optical fiber handpiece, as shown and described. 